ENGLISH ABSTRACT: With the inception of precision farming techniques during the last decade, agricultural
efficiency has improved, leading to greater productivity and enhanced economic
benefits associated with agriculture. The awareness of health risks associated with
food borne diseases has also increased. Systems such as Hazard Analysis and Critical
Control Points (RACCP) in the USA and Good Agricultural Practices (GAP) in
Europe are trying to ensure that no food showing signs of microbial contamination
associated with production techniques are allowed onto the export market. Growers
participating in exporting are thus being forced to conform to the requirements set by
international customers.
The aim of this study was to compile a computerized record keeping system that
would aid farmers with the implementation of GAP on farms, by making use of GIS
capabilities. A database, consisting of GAP-specific data was developed. ArcView
GIS was used to implement the database, while customized analyses procedures
through the use of Avenue assisted in GAP-specific farming related decisions. An
agricultural area focusing on the export market was needed for this study, and the nut
producing Levubu district was identified as ideal.
By making use of ArcView GIS, distinct relationships between different data sets
were portrayed in tabular, graphical, geographical and report format. GAP
requirements state that growers must base decisions on timely, relevant information.
With information available in the above-mentioned formats, decisions regarding
actions taken can be justified. By analysing the complex interaction between datasets,
the influences that agronomical inputs have on production were portrayed, moving
beyond the standard requirements of GAP.
Agricultural activities produce enormous quantities of data, and GIS proved to be an
indispensable tool because of the ability to analyse and manipulate data with a spatial
component.
The implementation of good agricultural practices lends itself to the use of GIS. With
the correct information available at the right time, better decisions can promote optimal croppmg, whilst rmmrrnzmg the negative effects on the consumer and
environment.